10. As the sample size increases, the (A) Standard deviation of the population decreases (B) Population mean increases (C) Sample mean increases (D) Standard error of the sample mean increases (E) Standard error of the sample mean decreases

17. The nicotine content in cigarettes of a certain brand is normally distributed, with mean (in milligrams) and standard deviation $\sigma = 0.1$. The brand advertises that the mean nicotine content of its cigarettes is 1.5, but measurements on a random sample of 100 cigarettes of this brand give a mean of $\overline{x} = 1.53$. Is this evidence that the mean nicotine content is actually higher than advertised? To answer this, test the hypotheses $H_0: \mu = 1.5, H_a: \mu > 1.5$ at the 5% significance level. You conclude (A) That $ H_0 $ should be rejected. (B) That $ H_0 $ should not be rejected. (C) That $ H_{a} $ should be rejected. (D) There is a $ 5\% $ chance that the null hypothesis is true. (E) There is a $ 5\% $ chance that the alternative hypothesis is true.

10. As the sample size increases, the
(A) Standard deviation of the population decreases
(B) Population mean increases
(C) Sample mean increases
(D) Standard error of the sample mean increases
(E) Standard error of the sample mean decreases

相關試題

相關試卷

10. As the sample size increases, the(A) Standard deviation of the population decreases(B) Population mean increases(C) Sample mean increases(D) Standard error of the sample mean increases(E) Standard error of the sample mean decreases

相關試題

相關試卷

10. As the sample size increases, the
(A) Standard deviation of the population decreases
(B) Population mean increases
(C) Sample mean increases
(D) Standard error of the sample mean increases
(E) Standard error of the sample mean decreases